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Norbert Weferling
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Frechen, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Process for preparation of dialkylphosphinic salts
Patent number
7,635,785
Issue date
Dec 22, 2009
Clariant Deutschland GmbH
Harald Bauer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Dialkylphosphinic salts, their use, and a process for their prepara...
Patent number
7,446,140
Issue date
Nov 4, 2008
Clariant Produkte (Deutschland) GmbH
Harald Bauer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Dialkylphosphinic salts
Patent number
7,420,007
Issue date
Sep 2, 2008
Clariant Produkte (Deutschland) GmbH
Harald Bauer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Modified polyethylenephosphinic acids and their salts
Patent number
7,348,396
Issue date
Mar 25, 2008
Clariant Produkte (Deutschland) GmbH
Martin Sicken
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Modified polyethylenephosphinic acids and their salts
Patent number
7,129,320
Issue date
Oct 31, 2006
Clariant GmbH
Martin Sicken
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for preparing (metal) alkylphosphonites II
Patent number
6,815,558
Issue date
Nov 9, 2004
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing (metal) alkylphosphonites I
Patent number
6,806,383
Issue date
Oct 19, 2004
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing alkylphosphonite esters
Patent number
6,770,779
Issue date
Aug 3, 2004
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Polymeric phosphinic acids and salts thereof
Patent number
6,727,335
Issue date
Apr 27, 2004
Clariant GmbH
Martin Sicken
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing ethanebis(alkylphosphinic) acids
Patent number
6,583,315
Issue date
Jun 24, 2003
Clariant GmbH
Martin Sicken
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Polymeric phosphinic acids and salts thereof
Patent number
6,569,974
Issue date
May 27, 2003
Clariant GmbH
Martin Sicken
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing salts of dialkylphosphinic acids
Patent number
6,534,673
Issue date
Mar 18, 2003
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing alkylphosphonic acids
Patent number
6,420,598
Issue date
Jul 16, 2002
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing dialkylphosphinic acids and their salts
Patent number
6,359,171
Issue date
Mar 19, 2002
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Processing for preparing salts of dialkylphosphinic acids
Patent number
6,355,832
Issue date
Mar 12, 2002
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing dialkylphosphinic acids
Patent number
6,329,544
Issue date
Dec 11, 2001
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing dialkylphosphinic acids
Patent number
6,300,516
Issue date
Oct 9, 2001
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing phosphinate esters
Patent number
6,278,012
Issue date
Aug 21, 2001
Clariant GmbH
Sebastian Hörold
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing salts of dialkylphosphinic acids
Patent number
6,248,921
Issue date
Jun 19, 2001
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing arylalphosphinic acids
Patent number
6,242,642
Issue date
Jun 5, 2001
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing metal salts of arylalkylphosphinic acids
Patent number
6,232,493
Issue date
May 15, 2001
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing phosphinic esters
Patent number
6,090,968
Issue date
Jul 18, 2000
Clariant GmbH
Sebastian Horold
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing phosphonous esters
Patent number
6,090,967
Issue date
Jul 18, 2000
Clariant GmbH
Sebastian Horold
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for alkylating elemental phosphorus
Patent number
6,011,172
Issue date
Jan 4, 2000
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing dialkylphosphinate salts
Patent number
5,973,194
Issue date
Oct 26, 1999
Clariant GmbH
Norbert Weferling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Secondary and tertiary phosphines and processes for their preparation
Patent number
5,925,785
Issue date
Jul 20, 1999
Celanese GmbH
Othmar Stelzer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing tert.-butyl chloroacetate
Patent number
5,591,888
Issue date
Jan 7, 1997
Hoechst AG.
Andreas Seidel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of tertiary phosphines
Patent number
5,268,479
Issue date
Dec 7, 1993
Hoechst Aktiengesellschaft
Othmar Stelzer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for inhibiting and destroying peroxides in dialkyl ethers
Patent number
5,166,452
Issue date
Nov 24, 1992
Hoechst Aktiengesellschaft
Reinhard Gradl
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for purifying and recovering the contaminated catalyst solu...
Patent number
5,002,914
Issue date
Mar 26, 1991
Hoechst Aktiengesellschaft
Heinz Erpenbach
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
Modified polyethylenephosphinic acids and their salts
Publication number
20070027297
Publication date
Feb 1, 2007
CLARIANT FINANCE (BVI) LIMITED
Martin Sicken
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Nanoparticulate phosphorus-containing flame retardant system
Publication number
20060287418
Publication date
Dec 21, 2006
Clariant GmbH
Harald Bauer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Dialkylphosphinic salts, their use, and a process for their prepara...
Publication number
20060084734
Publication date
Apr 20, 2006
Clariant GmbH
Harald Bauer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Dialkylphosphinic salts
Publication number
20060074157
Publication date
Apr 6, 2006
Clariant GmbH
Harald Bauer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for preparation of dialkylphosphinic salts
Publication number
20050137418
Publication date
Jun 23, 2005
Clariant GmbH
Harald Bauer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Modified polyethylenephosphinic acids and their salts
Publication number
20040176580
Publication date
Sep 9, 2004
Clariant GmbH
Martin Sicken
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polymeric phosphinic acids and salts thereof
Publication number
20030216533
Publication date
Nov 20, 2003
Clariant GmbH
Martin Sicken
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PROCESS FOR PREPARING ETHANEBIS(ALKYLPHOSPHINIC) ACIDS
Publication number
20030073865
Publication date
Apr 17, 2003
Clariant GmbH
Martin Sicken
C07 - ORGANIC CHEMISTRY